The appearance to about five hundred on an appointed mountain in Galilee, and a commission given

Mat 28:16-20

16 But the eleven disciples went into Galilee, to the mountain where Jesus had given them orders to go.
17 And when they saw him they gave him worship: but some were in doubt.
18 And Jesus came to them and said, All authority has been given to me in heaven and on earth.
19 Go then, and make disciples of all the nations, giving them baptism in the name of the Father and of the Son and of the Holy Spirit:
20 Teaching them to keep all the rules which I have given you: and see, I am ever with you, even to the end of the world.

Mar 16:15-18

15 And he said to them, Go into all the world, and give the good news to everyone.
16 He who has faith and is given baptism will get salvation; but he who has not faith will be judged.
17 And these signs will be with those who have faith: in my name they will send out evil spirits; and they will make use of new languages;
18 They will take up snakes, and if there is poison in their drink, it will do them no evil; they will put their hands on those who are ill, and they will get well.

1Co 15:6

6 Then by more than five hundred brothers at the same time, most of whom are still living, but some are sleeping;